A two-seater spaceship smaller than a private jet that will take people up for a 25-minute space flight, is being launched in Mojave today. According to the Lynx Mark 1's makers, Xcor Aerospace, the spacecraft is expected to be at the test-flight stage by 2010. The two-seater craft has room for one passenger besides…

That's a picture of XCOR Aerospace's new liquid methane and liquid oxygen powered engine, a prototype of what could be launching future rockets to the Moon and Mars. The private space firm created the engine, which is about 20% more efficient than traditional hypergol engines that power trips today, with funding from…